Re: Incorrect mdelay() results on Power Managed Machines x86

> Boot with the 'notsc' option is one approach. We certainly could recalibrate
> the clock if we could get events out of ACPI, APM or some other source. Maybe
> someone at IBM knows something on the thinkpad front here. If there is for
> example an additional apm event or irq we can enable for the thinkpads to see
> the speed change we can make it work

On the ThinkPad 600E (at least), we get a Power Status Change APM event.

Cheers,
Stephen Rothwell

P.S. We actually get two of these events each time we remove or insert the
power cord ...